ART HP-1
MRP - Rs. 6,128
ART HP-1 clip-on headphone amplifier: locking XLR / 1/4 inch combo input, mono / stereo switch, 3.5 mm output, 105 mW, over 40 hours on 2 x AA. Available in India from Shivansh Electronics, Kolkata, West Bengal, India.
VISUAL GUIDE — See Every Photo, Spec & Setup Step (PDF)
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Specifications
| Type | Battery‑powered clip‑on headphone amplifier |
| Input | Locking 1/4 inch / XLR combo jack |
| Input impedance | 5 kΩ |
| Maximum input level | +6.6 dBu |
| Output | 3.5 mm (1/8 inch) stereo jack |
| Maximum output level | 105 mW at 0.1 % THD |
| Maximum gain | +9 dB |
| Total harmonic distortion | ≤ 0.02 % at 1 kHz (typical) |
| Controls | Volume (with off position), balanced mono / unbalanced stereo switch; battery status LED |
| Typical run time | 40 hours (alkaline batteries) |
| Power requirements | 2 x AA batteries (included) |
Physical
| Dimensions (H x W x D) | 137 x 43.7 x 40.6 mm (5.4 x 1.72 x 1.6 inch) |
| Weight | 0.23 kg (0.51 lb) |
| Mounting | Belt clip |
Product overview
The ART HP-1 is a compact, battery-powered clip-on headphone amplifier for players who prefer a wired connection for their in-ear monitors.
It features a locking combo input for XLR and 1/4 inch TRS connections and a 1/8 inch (3.5 mm) headphone output with a volume control. The HP-1 switches between balanced mono and unbalanced stereo operation and provides over 40 hours of performance from two AA batteries. It delivers the high output level needed in live music venues and with a variety of headphones, and is great for in-ear monitoring. With a rugged extruded enclosure, heavy-duty jacks and a sturdy belt clip, the HP-1 is built to withstand the rigours of the road and deliver clear, powerful, reliable sound.
| Locking combo input | XLR / 1/4 inch |
| Maximum output at 0.1 % THD | 105 mW |
| From two AA batteries | 40+ hours |
| With sturdy belt clip | 0.23 kg |
Key features
- Locking combo input jack for XLR and 1/4 inch TRS
- Balanced mono / unbalanced stereo switch
- 1/8 inch (3.5 mm) headphone output
- Variable volume control that also switches the unit off
- Over 40 hours of battery life from two AA batteries
- Battery status LED
- Sturdy belt clip
- Rugged design with heavy-duty jacks
Input and mono / stereo switch
The locking combo jack takes the output of a mixer, for example a monitor mix, on XLR or 1/4 inch TRS and holds the cable securely. An inner switch selects balanced mono, for a mixer's aux send or any other mono source, or unbalanced stereo, for a headphone output or other stereo source.
Volume, power and battery
The volume knob adjusts the output level and acts as the power switch: turning it fully counterclockwise, or removing the headphones from the output jack, preserves battery life. A green LED shows that the HP-1 is powered and turns red when the batteries are close to being depleted. The two AA batteries sit in a compartment opened by holding the release button and sliding the outer shell towards the headphone jack.
Applications
ART names live use on stage and project studios: the HP-1 clips to a belt or waistline for hands-free in-ear monitoring from a monitor mix, and also serves instrument monitoring in portable set-ups.
In the box
- HP-1 headphone amplifier
- 2 x AA batteries
ART HP-1: frequently asked questions
Which connections does the input accept?
A locking combo jack that accepts both XLR and 1/4 inch TRS plugs.
How long do the batteries last?
Over 40 hours from two AA alkaline batteries; ART's manual gives 40 hours as the typical run time.
Can it work with a mono monitor send?
Yes. Set the switch to balanced mono for a mixer's aux send or any other mono source, and to unbalanced stereo for a stereo source.
How do I switch it off?
Turn the volume knob fully counterclockwise, or remove the headphones from the output jack.
Where can I buy the ART HP-1 in India?
The ART HP-1 is available from Shivansh Electronics, Kolkata, West Bengal, India, with delivery across India.
Workflow 1: Wired in-ear monitoring from a monitor mix
Musicians on stage with in-ear monitors.
Connections
| Connect | To |
|---|---|
| Mixer aux send (XLR or 1/4 inch) | HP‑1 combo input |
| In‑ear monitors | HP‑1 1/8 inch output |
Setup
- Set the switch to balanced mono.
- Clip the HP-1 to a belt.
- Turn up the volume knob to switch on and set the level.
Tip: The locking combo jack keeps the monitor cable secure.
Workflow 2: Stereo source on headphones
Users feeding the HP-1 from a stereo headphone output.
Connections
| Connect | To |
|---|---|
| Stereo headphone output | HP‑1 1/4 inch input |
Setup
- Set the switch to unbalanced stereo.
- Adjust the volume.
Tip: Stereo is the switch position nearest the input connector.
Workflow 3: Project studio cue feed
Project studios needing a portable headphone feed.
Connections
| Connect | To |
|---|---|
| Cue output of the mixer | HP‑1 input |
| Headphones | HP‑1 output |
Setup
- Connect the cue feed.
- Set mono or stereo to match the source.
- Set a comfortable level.
Tip: The HP-1 provides the high output needed with a variety of headphones.
Workflow 4: Saving battery life
Performers on long gigs and tours.
Connections
| Connect | To |
|---|---|
| HP‑1 | 2 x AA batteries |
Setup
- Turn the volume fully counterclockwise when not in use.
- Or unplug the headphones from the output jack.
Tip: The LED turns from green to red when the batteries are close to depleted.
Workflow 5: Changing the batteries
All users.
Connections
| Connect | To |
|---|---|
| Battery compartment | 2 x 1.5 V AA batteries |
Setup
- Hold the RELEASE button and slide the shell towards the headphone jack.
- Insert two AA batteries with the correct polarity.
- Slide the unit back into the shell.
Tip: Do not mix old and new batteries, or rechargeable and non-rechargeable types.
Workflow 6: Hands-free monitoring while moving
Singers and players who move around the stage.
Connections
| Connect | To |
|---|---|
| Belt clip | Belt or waistline |
Setup
- Attach the HP-1 to a belt.
- Route the monitor cable to the locking input.
Tip: The rugged extrusion and heavy-duty jacks are built for the road.
